Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC7BT callsign genealogy
Currently held by MATTOON, MICHAEL L
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by AC7BT's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AC7BT.
No current licensee on record previously held this callsign.